html,
body {
    width: 100%;
    /*overflow: hidden;*/
    height: 100%;
    /* background: url(./images/bg.png) no-repeat; */
    background-size: 100%;
    background-attachment: fixed;
    background-color: #040f3c;
}
#main {
    width: 100%;
    height: 100%;
    display: flex;
    background-color: #040f3c;
}

#left {
    width: 23%;
    height: 100%;
    /*border: #54dcf2 solid 3px;*/
    float: left;
    margin-right: 3px;
    margin-left: 2px;
    text-align: center;
    padding-left: 10px;
    display: flex;
    flex-wrap: wrap;

}

#center {
    width: 50%;
    height: 140%;
    text-align: center;
    margin: 0 auto;
    border: #54dcf2 solid 2px;
    display:flex;
    flex-wrap: wrap;

}
#china-center {
    width: 50%;
    height: 128.5%;
    text-align: center;
    margin: 0 auto;
    border: #54dcf2 solid 2px;
    display:flex;
    flex-wrap: wrap;

}

#right {
    display: flex;
    width:23%;
    height: 100%;
    flex-wrap: wrap;
    /*border: #54dcf2 solid 3px;*/
    /*background-color: cyan;*/
    margin-right: 12px;
    margin-left: 3px;
}
#left-top{
    width: 95%;
    height: 55%;
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top: 20px;
    position: relative;
    display: flex;

}

#left-center{
    width: 95%;
    /*height: 26%;*/
    display: flex;
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top: 20px;

}
#left-bottom{
    width: 95%;
    height: 50%;
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top: 20px;
    display: flex;
    margin-bottom: 20px;
}
#navigation{
    height: 50px;
    padding: 10px;
    font-size: 25px;
    color: #54dcf2;
    display: flex;
    width: 100%;
    text-align: center;
    justify-content: center;
    align-items: center;
}
#ul {
    height: 40px;
    width: 40%;
    /*会作为块级元素显示,表格前后带有换行符*/
    margin: 0 auto;
    /*text-align: center;*/
    padding: 0;
    display: flex;
}

.li {
    float: left;
    margin-left: 1px;
    padding: 0;
    width: 180px;
    height: 40px;
    line-height: 40px;
    font-size: 20px;
    background-color: lightseagreen;
    list-style-type: none;
    display: inline-block;
}

li:hover {
    display: block;
    background-color: orangered;
    width: 200px;
}
.a-li {
    text-decoration: none;
}
a:hover{
    text-decoration: none;
}

#header {
    height: 80px;
    width: 100%;
    /* position: relative; */
    padding-top: 13px;
    font-size: 36px;
    color: #54dcf2;
    text-align: center;
    background: url(../images/bg.png) top center no-repeat;
}

#map {
    width: 93%;
    height: 50%;
    margin:  0 auto;
    text-align: center;
    border: #54dcf2 solid 2px;
}
#center-bottom{
    width: 93%;
    height: 32%;
    margin:  0 auto;
    background-color: aliceblue;
    text-align: center;
    border: #54dcf2 solid 2px;
    margin-top: 20px;
}
#right-top{
    width: 95%;
    height: 55%;
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top: 20px;
    margin-bottom: 20px;
    display: flex;
}
#right-center{
    display: flex;
    width: 95%;
    /*height: 26%;*/
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top: 0px;

}

#right-bottom{
    display: flex;
    width: 95%;
    height: 49.5%;
    border: #54dcf2 solid 1px;
    background-color:#040f3c ;
    margin: 0 auto;
    margin-top: 20px;

}



#china-left-top{
    width: 95%;
    height: 62%;
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top: 20px;
}
#china-left-bottom{
    width: 95%;
    height: 62%;
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top: 20px;
}

#countdown{
    width: 100%;
    height: 90px;
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top:10px;
    border-left: none;
    border-right:none;
    font-size: 40px;
    text-align: center;
    margin-bottom:20px ;
    padding-top:15px;
    color: #54dcf2;


}
#china-map{
    width: 93%;
    height: 45%;
    margin:  0 auto;
    /*background-color: gray;*/
    text-align: center;
    border: #54dcf2 solid 2px;
}

#china-center-bottom{
    width: 93%;
    height: 25%;
    margin: 0 auto;
    text-align: center;
    border: #54dcf2 solid 2px;
    margin-top: 20px;
    display: flex;

}


#china-right-top{
    width: 95%;
    height: 62%;
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top: 20px;

}
#china-right-bottom{
    width: 95%;
    height: 62%;
    border: #54dcf2 solid 1px;
    margin: 0 auto;
    margin-top: 20px;

}
img{
    position: relative;
    width: 100%;
    height: auto;
}


